Japanese Oak from JapanWe use raw woods made from Japanese oak, always resulting in individual differences ingrain and knots, and unevenness in color. Warps and cracks may appear as well, depending on usage. This is the appeal of natural wood - no two look alike. Natural wood has its own flair, and this is one thing that makes GLASS appealing. To provide the best products to our customers, we carefully select every wood we use to make our furniture. Enjoy the wood's distinctive texture that will increase with use